First: I’m sorry for your loss.
Not a solution, but just a 
warning: GIVE UP ON ICLOUD. It is the worst piece of garbage you will ever encounter when it comes to sync. You will end up with duplicate files, mangled files, spinning wheels of death, stuck files that won’t sync, files that are just missing all of their data… I spent months trying to get it right and lost countless hours of time both on troubleshooting and painfully re-entering lost data. Just, don’t.
Use something—anything—else: Dropbox, Google Drive, OneDrive, Syncthing, rsync, git…
I settled on a scheduled 1-way sync (using rsync) from my “real” vault to a folder on iCloud just so I can carry a copy of my notes with my on my phone, but there is no way I would trust iCloud enough to give it write access to my important data again. Yes I am using all the latest versions of Obsidian (1.4.6), iOS (16.6) and macOS (13.5.1)